A native species at risk of becoming Threatened; does not qualify as Endangered or Threatened, but have been determined to require some measure of protection or attention to ensure that the species does not become threatened. NYSDEC may regulate the taking, importation, transportation, or possession of any Species of Special Concern as it deems necessary.

Federal Protection:
Not Listed

State Rarity Rank:S1

A State Rarity Rank of S1 means: Typically 5 or fewer occurrences, very few remaining individuals, acres, or miles of stream, or some factor of its biology makes it especially vulnerable in New York State.

Global Rarity Rank:G5

A Global Rarity Rank of G5 means: Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.

Did you know?
There is a spring (short-day) and summer (long-day) form of checkered white. The spring form has strongly reduced black marks above and there is heavy green veining ventrally (Opler and Krizek 1984). Shapiro (1968) showed that the color variation is the result of larvae subjected to long nights of more than 14 hours in the spring.